So i'm pretty sure I overfed my plants on their first 'full strength' feeding in Canna coco using coco A+B.
I've attached 2 pics to demonstrate what this terrible event looks like.
My biggest confusion is I followed the Canna schedule exactly for a normal feeding (8mL/gal Rhizotonic, 10mL/gal A, 10mL/gal B, 10mL/gal CannaZym), this says it shoul produce an EC around 1.7, yet for me my EC was 2.5 !!!
So I watered it down until it was about 1.6, phed it back to 5.8 (the tapwater I use has pH 7.0), fed to runoff and this is what resulted lol.
This was Sunday, I just re watered them at a more dilute dose (of everything, rhizo, A/B, zyme) with EC 1.0 now.
If this brown edge shit isn't overfeeding, well sorry to waste anyone's time lol
Either way i'm a bit miffed at what I can tell will be quality nutes (the plants perked right the fuck up and had beautiful chlorosis except for this brownness that has been getting everworse). I guess I will just feed them by my own measure of EC and not the chart their website produces for you anymore, but thats a shame.
PS: Other info:
Plants are 3 weeks from seed. Small grow dresser of 10 CUBIC feet, 10 x 23W CFLs (which I raised quite a bit out of fear they were somehow magically burning them, causing this brownness. Of course as I expected, they weren't burning my plants). Temps about 75-80 peak end, 65-70 low end, 40% RH.
Medium is just Canna coco, though I did add about 15% perlite to ONE plant (the first pic), the rest of my plants have no perliteetc. just coco